Carbureter.



W. J. RADLOFF.

CARBURETER.

APPLICATION FILED OCT. 19. 1914.

1 176,600. Patented Mar. 21, 1916.

4 SHEETS-SHEET I- W. J. RADLOFF.

CARBURETER.

APPLICATION FILED ocr. I9. 1914.

1,176,600. Patented Mar. 21, 1916.

4 SHEETS-SHEET 2.

W. I. RADLOFF.

CARBURETER.

APPLICATION FILED 0m. 19. l9l4.

1 176,600. Patented Mar. 21,1916.

4 SHEETS-SHEET 3.

(Mon e/1 W. J. RADLOFF.

CARBURETER.

APPLICATION min OCT. 29. 1914.

1,176,600. Patented Mar. 21, 1916.

4 5HEETS-SHEET 4.

wig; guiw d Mo t/HM IVILLIAIEI J. RADLOFF, OF CHARLES CITY, IOWA.

CARBURETER.

Specification of Letters Patent.

Patented Mar. 21, 1916.

Application filed October 19, 1914. Serial No. 867,508.

2 '0 all whom it may concern.

Be it known that I, WILLIAM J. RADLOFF, a citizen of the United States, residing at Charles City, in the county of Floyd and State of Iowa, have invented certain new and useful Improvements in Carbureters; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to carbureters, and has for its object to provide a carbureter of generally improved construction embodying a double fuel or float chamber and independently operable valves, whereby different qualities of liquid fuel may be used.

With this and other objects in view, the invention consists in the novel construction, arrangement and formation of parts as will be hereinafter specifically described, claimed and illustrated in the accompanying drawings, in which:

Figure 1 represents a side elevation of the carbureter complete. Fig. 2 represents a top plan view thereof. Fig. 3 represents a longitudinal sectional view through the carbureter, partly broken away. Fig. 4 represents a transverse central sectional view through the carbureter. Fig. 5 represents a fragmental end elevation. Fig. 6 represents a perspective view of one of the rock levers removed. Fig. 7 represents a fragmental detail view, in perspective, of one of the shaft supports. Fig. 8 represents a fragmental sectional view illustrating the device for controlling the fuel valves.

Referring to the drawing in detail, wherein similar reference numerals designate corresponding parts throughout the several views, the numeral 5 indicates generally the body of the carbureter including the bowl 6 and top part 7 removably secured to the upper open end of the bowl 6 by bolts or equivalent securing devices 8. A partition 9 is arranged transversely of and centrally within the bowl 6 and divides the'interior of the latter in float chambers 10, the opposite extremities of which are reduced to provide valve chambers 11, having threaded openings in the bottoms thereof receiving screws 12 formed with longitudinal openings 13 receiving the shanks of float-operated valves 14. Substantially semi-circular floats 15 are arranged within the chambers 10 and are supported by levers 16 pivotally secured at their outer ends by pins 17 positioned transversely through the walls of the valve chambers 11. The valves 14 are arranged to close the inner ends of passages 18 formed in the body 5 and adapted to be connected with suitable fuel pipes.

The top part 7 of the body of the carbureter is of hollow formation, providing a carbureting chamber 20 in one end of which is operatively mounted a throttle valve 21 operable by a throttle lever 22*. The end of-the top part 7 opposite the throttle valve 21 is reduced and screw-threaded to receive the removable dome or cap 22 having an open end adapted to be closed by an air intake valve 23 slidably mounted upon a sleeve 24 slidable longitudinally throu h aspider 25 formed integral with the end 0 the cap 22 and constituting a free air intake port. The valve 23 is of the outwardly closing type, and is normally retained in closed position by the tension of a spring 25 coiled about the sleeve 24 and engaged at one end against a flange 26 of the sleeve 24 and at its opposite end against the inner face of the valve 23. The sleeve 24 is telescopically engaged over the reduced outer extremity of a free air intake pipe 27 having an open inner end terminating in proximity to the central bottom portion of the carbureting chamber 20 in which are formed liquid fuel passages 28. The passages 28 communicate with the liquid chamber 20' and are continued downwardly through extensions 29 formed integral with the bottom of the part 7 and extending into the float chambers 10 on opposite sides of the partition 9. The passages '28 are adapted to be alternately opened and closed, as desired, to communicate the chamber 20 with either of the chambers 10 by valves 30 carrying guide pins 31 extending a short distance within the passages 28 and operable by valve rods 32, extending up wardly through the top part 7, as clearly illustrated in Fig. 4. Springs 33 are arranged upon the rods 32 and normally tend to lift the latter and close the valves 30. A lever 35 is pivotally secured at 36 to the top part 7 and is formed at its lower extremity with oppositely directed lateral extensions 37 adapted, when the lever 85 is swung from right to left to alternatelv engage the valve rods 32 to alternately open and close the valves 30. WVhen the lever 35 110 is moved to a vertical position so as to dis- -pose the lower edges of the lateral extenslidably mounted through the top wall of 1 the top part 7 and are adapted to coiiperate with the upper ends of the passages 28 to control the flow of fluid therethrough. Intermediate their ends the valves 38 are screwthreaded to adjustably receive collars 39 slidably mounted within recesses 40 formed in the top part 7 and normally retained in elevated position by springs 41 arranged within the recesses 40 and engaged against the under facesof the collars 39. Flanges 42 are formed integral With the upper ends of the collars 39 and are each formed with a peripheral notch receiving an upstanding pin 43 secured in the top part 7 between the recesses 40 for locking .the collars 39 against rotation.

An integral arm 44 of the top part 7 is formed with an opening in which one end of a shaft 45 is 'pivotally mounted upon a pin 46 extending horizontally through the arm 44. The opposite end of the shaft 45 is supported upon a cam 4 9 which latter is pivotally mounted on a pin 48 secured in a pair of arms 47 carried by the top part 7 and spaced from the arm 44. The shaft 45 is normally retained in engagement with..the cam 49 by a spring 50 connected at its pper end with the shaft and at its lower end with a screw 51 secured to the top part 7 of the body 5. The cam 49 carries an arm 52 which is connected with the longitudinally slidable sleeve 24 by a link 53. A pair of rock levers 54-are pivotally supported upon the shaft 45 and are formed with bifurcated ends receiving the needle valves 38 and engaging the top faces of the flanges 42 of the collars 39. Rollers 55 are rotatably mounted in the outer ends of the rock levers 54 and are engaged with curved strips 56 secured in spaced relation upon a segment 57 non-rotatably mounted upon a shaft 58 suitably supported on the top part 7 of the body. The corresponding ends of the strips 56 are permanently secured to one end of the segment 57 by a rivet or equivalent means 59 and the intermediate and opposite end portions thereof are secured at the desired curvature by screws 60 having peripheral channels receiving the edge portions of said strips, which latter are preferably formed of spring metal so as to insure against the same bending out of shape. One end of the shaft 58 carries a crank arm 61 which is adjustably connected with the adjacent end of the throttle lever 22 by a link 62. The movement of the throttle lever 22 and of the throttle valve 21 is adjustably limited by a set screw 63 movable against an abutment 64 formed integral with the top part 7.

A substantially U shaped member 66 is pivotally mounted in the open end of the sleeve 24 and is connected with an operating handle 67 by a connecting rod 68. The handle 67 carries a threaded shank 69 slidably mounted within a sleeve 70 adjustably positioned within an apertured plate 71 secured upon a suitable support (not shown). A spring actuated locking device 72 is secured within a suitable opening formed in the sleeve 70 and bears against. the threads on the shank 69 to retard the movement of the latter.

In use, the fuel inlet passages 18 are connected with suitable reservoirs containing liquid fuel of different quality, such as kerosene and gasolene. The lever 35 is adjusted so as to open the valve 30 in the float chamber 10 containing the desired liquid fuel to be used in running the gas engine, and the needle valve 38 controlling the passage of fluid through the passage 28 is adjusted so as to feed the proper mixture. The throttle lever 22 is adjusted to feed the desired quantity of fuel to the engine. Movement of the lever 22 is imparted to the shaft 58 through the link 62, and crank arm 61 causing the segment 57 and strips 56 carried thereby to be rotated, causing the adjacent ends of the rock levers 54 to lower under the tension of the springs 41, which latter also lift the needle valves 38 and permit a greater quantity of fluid to enter the carbureting chamber 20 through the passages 28 as the throttle valve 21 is opened. The extent of the movement of the rock levers 54 may be varied, as desired, by adjusting the curvature of the spring strip 56 by means of the screws 60. When it is desired to decrease the quantity of air admitted to the carbureting chamber 20, as when starting engine, the .handle 67 is lifted, moving the connecting rod 68 and sleeve 24 longitudinally and increasing the tension of the spring 25 against the intake valve 23. Movement of the sleeve 24 is imparted to the arm 52 by the link 53, causing the cam 49 to be partially rotated, and lifting the adjacent end of the shaft 45 together with rock lever 54 which permits the needle valves 38 to open under the influence of the springs 41 and admit an additional supply of fluid which is deposited in the bottom of the carbureting chamber 20 and drawn into the cylinders of the engine past the throttle valve 21. The shaft 45 and cam 49 are automatically returned to normal position, when the handle 67 is released, by the tension of the spring 50.

What I claim is:

1. In a carbureter a body including a carbureting chamber and float chambers and passages communicating said float chambers with said carbureting chamber, a partition separating the float chambers, needle valves controlling the flow of fluid from said float chambers through said passages, a throttle valve at one end of said carbureting chamber, a spring closed air intake valve at the opposite end of said carbureting chamber, means for controlling the tension against said intake valve, means for opening said needle valves, and connections between said tension controlling means and said valve opening means.

2. In a carbureter a body including float chambers separated by a partition and a car'- bureting chamber communicating with each of the float chambers by fluid passages, valves at the lower extremities of said passages, needle valves at the upper ends of said passages controlling the flow of fluid therethrough, a throttle valve at one end of said carbureting chamber. a spring actuated air intake valve at the opposite end of said chamber, means for controlling the tension against said air intake valve, means for adjusting said needle 'alves, means for raising said needle valves independent of said adjusting means, and connections between said tension controlling means and said valve lifting means.

3. In a carbureter, a body including float chambers, a carbureting chamber, and passages communicating the float chambers with the carbureting chamber, normally closed valves for closing the lower ends of the passages, means for alternately opening said valves, and needle valves arranged above said passages.

4. In a carbureter, a body including a float chamber and a carbureting chamber and a passage communicating said chambers, a needle valve for controlling the flow of fluid through said passage, means normally tending to open said needle alvc. a shaft pivotally mounted at one end in said body, means for lifting the free end of said shaft, a rock lever pivotally mounted upon said shaft and engaged at one end with said needle valve, means engaging the opposite end of said rock lever to rock the latter.

5. In a carbureter. a body including float chambers, a carbureting chamber, and passages communicating the float chambers with the carbureting chamber. needle valves for controlling the flow of fluid from the float chambers to the carbureting chamber, means for adjusting said needle valves, means normally retaining said valves in open position, and means for simultaneously adjusting said valves.

(3. In a carbureter, a body including float chambers, a carbureting chamber and passages communicating the float chambers with the carbureting chamber, needle valves arranged above said passages, means for independently adjusting said needle valves. and means for simultaneously opening said valves.

7 In a carbureter, a body including a float chamber, a carbureting chamber and a passage communicating the float chamber with the carbureting chamber, a needle valve for controlling the flow of fluid from said float chamber to said carbureting chamber, an air intake valve at one end of said carbureting chamber. means for opening said needle valve, adjustable tensioning means for said intake valve, and a connection between said tension adjusting means and said valve opening means.

8. In a carbureter, a body includinga float chamber. a carbureting chamber and a passage communicating the float chamber wlth the carbureting chamber. a needle valve arranged above said passage. means normally retaining said valve in closed position. means for opening said valve, an air intake valve at one end of said carbureting chamber. adjustable tensioning means for said air intake valve, and in vans connecting said adjustable tcnsioning means with said opening means.

9. In a carbureter. a body including float chambers. a carbureting chamber. and passages conununicating the float chambers with the carbureting chamber. needle valves controlling the flow of fluid through said passages. means for simultaneously opeir ing said valves, an air intake valve in said carbureting chamber. adjustable tensioning means for said air intake valve, and a connection between said tensioning means and said opening means.

ll). In a carbureter. a body including float chambers, a carbureting chamber, and passages con'mmnicating the float chambers with the carbureting chamber. valves controlling the flow of fluid through said passages. means for independently adjusting said valves. means for simultaneously opening said valves. an air intake valve in said carbureting chamber. adjustable tensioning means for said air intake valve, and a connection between said adjustable tensioning means and said opening means.

11. In a carbureter. a body including float chambers. a carbureting chamber. and passages communicating the float chambers with the carbureting chamber. needle valves for regulating the flow ot' fluid through said passages. means for independently adjusting said needle valves, means normally re taining said valves in open position. means for simultam-ously opening said valves. an air intake valve in said carbureting chainber. adjustable tensioning means for said air intake valve. and a connection between said adjustable tensioning means and said opening means.

12. In a carbureter. a body including float chan'ibers. a carbureting chamber. and passages communicating the float chambers with the carbureting chamber, independently operable valves for closing the lower ends of said passages, needle valves arranged over said passages, means for independently adjusting said needle valves, and means for simultaneously opening said needle valves.

13. In a carbureter, a body including float chambers, a carbureting chamber, and passages communicating the float chambers with the carbureting chamber, valves for closing the lower ends of said passages, means normally retaining said valves in closed position, means for alternately opening said valves, needle valves arranged over said passages, means for independently adjusting said needle valves, and means for simultaneously adjusting said needle valves.

H. In a carbureter, a body having fuel passages therein, valves for closing the lower extremities of said passages, means for normally retaining said valves in closed position, a lever pivotally secured to said body, and lateral extensions carried by said lever adapted, during oscillation of the latter, to alternately open said valves.

15. In a carbureter, a body including fuel passages, needle valves controlling the flow of fuel through said passages, means normally retaining said needle valves in open position, means for limiting the opening movement of said needle valves, a shaft pivotally supporting said limiting means, a pivotal connection between one end of said shaft and said body, and means for ad ustalblyf supporting the opposite end of said s 1a t.

16. In a carbureter, a body including fuel passages, needle valves controlling the flow of fuel through said passages, a shaft pivotally secured at one end to said body, means for adjustably supporting the opposite end of said shaft, rock levers pivotally supported upon said shaft and engaged at their inner extremities with said needle valves for limiting the opening movement of the latter, and means for ad uStably supporting the outer extremities of said rock levers.

17. In a carbureter, a body including a carbureting chamber and float chambers, and passages communicating said float chambers with said carbureting chamber, a spring actuated air intake valve at one end of said carbureting chamber, means for controlling the tension exerted by the spring against said intake valve, needle valves controlling the flow of fuel through said passages, and a connection between said tension controlling means and said needle valve for opening the latter during operation of said tension controlling means.

In testimony whereof I aflix my signature in presence of two witnesses.

WILLIAM J. RADLOFF.

Witnesses G120. H. JACKSON, RUTH TOWNER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

